Gas-engine.



P. W. BGAN.

GAS ENGINE.' APPLICATION FILED JULY 11, 1910.

Patented Nov. 14, -1911.

PATRICK W.' EGAN, or -WEST errnsrmn,l PENNSYLVANIA.

GAS-ENGINE.

Specification of Letters Patent. 'Application ined Juiy 11,

Patented Nov. 14, 1911.

1910. serial No. 571,266.

To all whom it may concern:

Be it known that I, PATRICK W. EGAN, a citizen of the United States, residing at West Chester, the county of Chester and State of Pennsylvania, haveK invented certain Improvements in Gas- Engines, of which the following is a specification.

My improvements in vgasengines relate to means for regulating the charge admitted to' thev cylinder, for the purpose of governing efficiency.'

.In the^ preferred construction, a rotaryvalve, having lseveral ports extending therethrough transversely to its axis, is placed in the passage connecting the cylinder of an engine with the chamber to Whichthe charge is admitted and in which it is compressed, andthe action of the engine is regulated by regulating the position of the valve by mechanism comprising a governor acting through means for effecting a quick movement, the mechanism being operated so as to obtain the desired port area of the valve and the delivery of the desired supply of gas to-the cylinder at t-he instant requisite for obtaining the maximum eiiciency. l

In the accompanying drawings, Figure 1 is a sectional side elevation of a gas engine embodying my improvements; Fig. 2 is a sectional elevation at right angles to the position shown in Fig. l; and Fig. 3 is a transverse sectional viewof the valve shown in the open position in the passa e which' onnects the crank chamber with t e cyliner. c

In the construction, as shown in the dra-W*- ings, the crank chamber 1 and the cylinder 2 are connected by the passage 3 having the port 4 communicating with the crank chamber andthe port 5 communicating with the cylinder; the cylinder containing the piston 6 connected by the rod 7 with the crank '8, of

' the shaft 9 which is journaled in bearings 10.

A cylindrical valve 11, having ports 12 separated by the diametrical web 13, is

vjournaled in the seat 14 and controls the passage 3. lThe ports are equal in cross sectional area and when fully opened have their outer faces liush With the corresponding Walls of the passage, so that the port area is changed proportionately vto the rot-ation ofthe valve and the total port area is variable at double the rate obtaining in the use under like conditions of a single port. A

pinion 15 is fixed to the valve 11 and is revolved by a larger pinion 16 journaled on a bearing 17, the pinion 16 being revolved by an arm 18 fixed thereto and connected through a link 19 With a lever 20 fulcrumed to the bearing 21. A collar 22 is loosely mounted on the crank shaft 9 (or an extension 1'0 of the bearing 10) and is provided with a circular channel 23 into which extends a fork 24 connected with the lever 20; the collar being movable longitudinally to adjust the position of the lever, Which acts through the link 19, arm 18, pinion 16 and pinion 15 to regulate the position of the valve.

The fly Wheel 25, fixed onthe shaft 9, carries bearings 26 on which are lfulcrunied crank levers comprising the arms 27 pivotally connected to the collar 22 and the arms 28 provided with the Weights 29. These weights are connected, suitably, by providing them respectively with laterally extending projections 30 and connecting the projections by springs 31, the tension of the springs being adjustable by screws 32. The Weights are held by the springs 'in their inner position and the valve is normally held fully open by the intermediate mechanism.

Initially the valve is in'the fully open position. As the s eed-of the engine rises so that the centri ugal action of the balls is suiicient to overcome the tension of the springs, the balls move outwardly, the collar isdrawn toward the iy wheel and the leve-r is caused to act, through the link and arm, upon'the pinions, by )vliich the valve is revolved and the passage closed proportionately to the rise in speed, thus-regulating at the desired instant the quantity of gas delivered from the crank chamber to the cylinder by the pulsatory action of the engine, it being understood 'that the chamber communicates with the cylinder in the rear ofthe piston.

Having described my invention, I claim 1. A gas engine comprising a cylinder, a

piston therein, a passage leading to said cylinder, a rotary valve for controlling said passage, a pinion fixed to said valve, a larger rotary pinion engaging said pinion first named, and mechanism comprising a gover-` nor'whereby said piston operates said rotary pinion.

21 A gas engine comprising a cylinder, a piston therein, a rotary shaft, means whereby said piston 'revolves said shaft, :L -passage and collar whereby said valve is gradually 10 leading to said cylinder, a valve for regulatclosed as the speed of the engine rises.

ing said passage, apinion xed to said valve, In Witness whereof I lhave hereunto set a second pinion xengaging said pinion first' my name this v8th day of July, 1910, in the named, means comprising a lever for turnpresence of the subscribing-Wltnesses.

ing said seoond pinion, a oollarmdvable lon- ,PATRICK W. EGAN.. gitudinally, said collar engaging and rock- Witnesses: ing said lever, a fly wheel on said shaft, and JOS. G. DENNY, J r.,

' a centrifugal governor connecting said wheel v ROBERT JAMES EARLEY. i 

